new extruder, thought out from scratch to be compact, simple, accesible and light. for the golemC "stone" printer

still fine tuning design, stl's soon, openSCAD files will follow.

it's designed around my very first aproach to drive roller, refinded by trial and error. instructions how to mill one will follow, feel free to make one for yourself but please, if you want to buy one, make sure the autor gets some material credit and buy here (http://mojreprap.pl/index.php?route=product/category&path=24) or contact me.